As a Sri Lankan, Number 1 in the world will be great. But its a long way off, stability off the field is at an all time low at the moment. CEO just got sacked along with numerous others.
The selectors need to be more positive when picking youngsters. Why Mendis didn't tour Australia last summer is beyond me. He should have been here for both tests and the ODI series with India and Australia.
As i said before, Sangakkara and Jayawardene won't perform every test. Samaraweera has the 3rd highest average in SL history and is a very solid number 5. Warnapura has started his Test career pretty well. However, there is still room for more consistency and improvement in the batting.